package com.kalix.training.course.biz.util;

import java.awt.*;
import java.awt.image.BufferedImage;
import java.util.HashMap;
import java.util.Map;
import java.util.Random;

/**
 * @Title: GraphicsUtil.java
 * @copyright
 * @Package com.utils
 * @Description: TODO(这里用一句话描述这个类的作用)
 * @author Mr.chen
 * @date 2016-11-2 下午03:31:30
 */
public class GraphicsUtil {

    private Font mFont = new Font("Times New Roman", Font.PLAIN, 17);

    Color getRandColor(int fc,int bc){
        Random random = new Random();
        if(fc>255) fc=255;
        if(bc>255) bc=255;
        int r=fc+random.nextInt(bc-fc);
        int g=fc+random.nextInt(bc-fc);
        int b=fc+random.nextInt(bc-fc);
        return new Color(r,g,b);
    }

    public Map<String, Object> getGraphics(){

        int width=100,height=18;
        BufferedImage image=new BufferedImage(width, height, BufferedImage.TYPE_INT_BGR);
        Graphics g=image.getGraphics();
        Random random = new Random();
        g.setColor(getRandColor(200,250));
        g.fillRect(1, 1, width-1, height-1);
        g.setColor(new Color(102,102,102));
        g.drawRect(0, 0, width-1, height-1);
        g.setFont(mFont);
        g.setColor(getRandColor(160,200));
        //画随机线
        for (int i=0;i<155;i++){
            int x = random.nextInt(width - 1);
            int y = random.nextInt(height - 1);
            int xl = random.nextInt(6) + 1;
            int yl = random.nextInt(12) + 1;
            g.drawLine(x,y,x + xl,y + yl);
        }

        //从另一方向画随机线
        for (int i = 0;i < 70;i++){
            int x = random.nextInt(width - 1);
            int y = random.nextInt(height - 1);
            int xl = random.nextInt(12) + 1;
            int yl = random.nextInt(6) + 1;
            g.drawLine(x,y,x - xl,y - yl);
        }

        //生成随机数,并将随机数字转换为字母
        String sRand="";
        for (int i=0;i<6;i++){
            int itmp = random.nextInt(26) + 65;
            char ctmp = (char)itmp;
            sRand += String.valueOf(ctmp);
            g.setColor(new Color(20+random.nextInt(110),20+random.nextInt(110),20+random.nextInt(110)));
            g.drawString(String.valueOf(ctmp),15*i+10,16);
        }

        g.dispose();

        Map<String, Object> map=new HashMap<String, Object>();
        map.put("rand", sRand);
        map.put("image", image);
        return map;
    }

}
